| Message ID | 1519348606-243485-1-git-send-email-shawn.lin@rock-chips.com |
|---|---|
| State | Superseded |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | Add endpoint driver for Rockchip PCIe controller | expand |
Hi Shawn, tested on my chromebook kevin, with this series and enable CONFIG_PCIE_ROCKCHIP_HOST, the pcie wifi(mrvl 8997) still works. so, for the pcie host driver part: Tested-by: Jeffy Chen <jeffy.chen@rock-chips.com> On 02/23/2018 09:16 AM, Shawn Lin wrote: > Most of the operations are used for both of host and EP driver, > so this patch spilt them out to a new function, rockchip_pcie_init_port > in pcie-rockchip.c and rename the original function to > rockchip_pcie_host_init_port to avoid confusion. No functional > changed intended. > > Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> > --- > > Changes in v2: None > > drivers/pci/rockchip/pcie-rockchip-host.c | 131 ++------------------------- > drivers/pci/rockchip/pcie-rockchip.c | 141 ++++++++++++++++++++++++++++++ > drivers/pci/rockchip/pcie-rockchip.h | 3 + > 3 files changed, 151 insertions(+), 124 deletions(-) > > diff --git a/drivers/pci/rockchip/pcie-rockchip-host.c b/drivers/pci/rockchip/pcie-rockchip-host.c > index 079949c..f5b0492 100644 > --- a/drivers/pci/rockchip/pcie-rockchip-host.c > +++ b/drivers/pci/rockchip/pcie-rockchip-host.c > @@ -294,134 +294,17 @@ static void rockchip_pcie_set_power_limit(struct rockchip_pcie *rockchip) > * rockchip_pcie_init_port - Initialize hardware > * @rockchip: PCIe port information > */ > -static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) > +static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) > { > struct device *dev = rockchip->dev; > - int err, i; > + int err, i = MAX_LANE_NUM; > u32 status; > > gpiod_set_value_cansleep(rockchip->ep_gpio, 0); > > - err = reset_control_assert(rockchip->aclk_rst); > - if (err) { > - dev_err(dev, "assert aclk_rst err %d\n", err); > - return err; > - } > - > - err = reset_control_assert(rockchip->pclk_rst); > - if (err) { > - dev_err(dev, "assert pclk_rst err %d\n", err); > - return err; > - } > - > - err = reset_control_assert(rockchip->pm_rst); > - if (err) { > - dev_err(dev, "assert pm_rst err %d\n", err); > + err = rockchip_pcie_init_port(rockchip); > + if (err) > return err; > - } > - > - for (i = 0; i < MAX_LANE_NUM; i++) { > - err = phy_init(rockchip->phys[i]); > - if (err) { > - dev_err(dev, "init phy%d err %d\n", i, err); > - goto err_exit_phy; > - } > - } > - > - err = reset_control_assert(rockchip->core_rst); > - if (err) { > - dev_err(dev, "assert core_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_assert(rockchip->mgmt_rst); > - if (err) { > - dev_err(dev, "assert mgmt_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_assert(rockchip->mgmt_sticky_rst); > - if (err) { > - dev_err(dev, "assert mgmt_sticky_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_assert(rockchip->pipe_rst); > - if (err) { > - dev_err(dev, "assert pipe_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - udelay(10); > - > - err = reset_control_deassert(rockchip->pm_rst); > - if (err) { > - dev_err(dev, "deassert pm_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_deassert(rockchip->aclk_rst); > - if (err) { > - dev_err(dev, "deassert aclk_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_deassert(rockchip->pclk_rst); > - if (err) { > - dev_err(dev, "deassert pclk_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - if (rockchip->link_gen == 2) > - rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2, > - PCIE_CLIENT_CONFIG); > - else > - rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_1, > - PCIE_CLIENT_CONFIG); > - > - rockchip_pcie_write(rockchip, > - PCIE_CLIENT_CONF_ENABLE | > - PCIE_CLIENT_LINK_TRAIN_ENABLE | > - PCIE_CLIENT_ARI_ENABLE | > - PCIE_CLIENT_CONF_LANE_NUM(rockchip->lanes) | > - PCIE_CLIENT_MODE_RC, > - PCIE_CLIENT_CONFIG); > - > - for (i = 0; i < MAX_LANE_NUM; i++) { > - err = phy_power_on(rockchip->phys[i]); > - if (err) { > - dev_err(dev, "power on phy%d err %d\n", i, err); > - goto err_power_off_phy; > - } > - } > - > - /* > - * Please don't reorder the deassert sequence of the following > - * four reset pins. > - */ > - err = reset_control_deassert(rockchip->mgmt_sticky_rst); > - if (err) { > - dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err); > - goto err_power_off_phy; > - } > - > - err = reset_control_deassert(rockchip->core_rst); > - if (err) { > - dev_err(dev, "deassert core_rst err %d\n", err); > - goto err_power_off_phy; > - } > - > - err = reset_control_deassert(rockchip->mgmt_rst); > - if (err) { > - dev_err(dev, "deassert mgmt_rst err %d\n", err); > - goto err_power_off_phy; > - } > - > - err = reset_control_deassert(rockchip->pipe_rst); > - if (err) { > - dev_err(dev, "deassert pipe_rst err %d\n", err); > - goto err_power_off_phy; > - } > > /* Fix the transmitted FTS count desired to exit from L0s. */ > status = rockchip_pcie_read(rockchip, PCIE_CORE_CTRL_PLC1); > @@ -514,8 +397,8 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) > err_power_off_phy: > while (i--) > phy_power_off(rockchip->phys[i]); > + > i = MAX_LANE_NUM; > -err_exit_phy: > while (i--) > phy_exit(rockchip->phys[i]); > return err; > @@ -1034,7 +917,7 @@ static int __maybe_unused rockchip_pcie_resume_noirq(struct device *dev) > if (err) > goto err_disable_0v9; > > - err = rockchip_pcie_init_port(rockchip); > + err = rockchip_pcie_host_init_port(rockchip); > if (err) > goto err_pcie_resume; > > @@ -1099,7 +982,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev) > goto err_set_vpcie; > } > > - err = rockchip_pcie_init_port(rockchip); > + err = rockchip_pcie_host_init_port(rockchip); > if (err) > goto err_vpcie; > > diff --git a/drivers/pci/rockchip/pcie-rockchip.c b/drivers/pci/rockchip/pcie-rockchip.c > index 6c0063d..d03508c 100644 > --- a/drivers/pci/rockchip/pcie-rockchip.c > +++ b/drivers/pci/rockchip/pcie-rockchip.c > @@ -12,6 +12,7 @@ > */ > > #include <linux/clk.h> > +#include <linux/delay.h> > #include <linux/gpio/consumer.h> > #include <linux/of_pci.h> > #include <linux/phy/phy.h> > @@ -144,6 +145,146 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) > return 0; > } > > +int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) > +{ > + struct device *dev = rockchip->dev; > + int err, i; > + u32 regs; > + > + err = reset_control_assert(rockchip->aclk_rst); > + if (err) { > + dev_err(dev, "assert aclk_rst err %d\n", err); > + return err; > + } > + > + err = reset_control_assert(rockchip->pclk_rst); > + if (err) { > + dev_err(dev, "assert pclk_rst err %d\n", err); > + return err; > + } > + > + err = reset_control_assert(rockchip->pm_rst); > + if (err) { > + dev_err(dev, "assert pm_rst err %d\n", err); > + return err; > + } > + > + for (i = 0; i < MAX_LANE_NUM; i++) { > + err = phy_init(rockchip->phys[i]); > + if (err) { > + dev_err(dev, "init phy%d err %d\n", i, err); > + goto err_exit_phy; > + } > + } > + > + err = reset_control_assert(rockchip->core_rst); > + if (err) { > + dev_err(dev, "assert core_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_assert(rockchip->mgmt_rst); > + if (err) { > + dev_err(dev, "assert mgmt_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_assert(rockchip->mgmt_sticky_rst); > + if (err) { > + dev_err(dev, "assert mgmt_sticky_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_assert(rockchip->pipe_rst); > + if (err) { > + dev_err(dev, "assert pipe_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + udelay(10); > + > + err = reset_control_deassert(rockchip->pm_rst); > + if (err) { > + dev_err(dev, "deassert pm_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_deassert(rockchip->aclk_rst); > + if (err) { > + dev_err(dev, "deassert aclk_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_deassert(rockchip->pclk_rst); > + if (err) { > + dev_err(dev, "deassert pclk_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + if (rockchip->link_gen == 2) > + rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2, > + PCIE_CLIENT_CONFIG); > + else > + rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_1, > + PCIE_CLIENT_CONFIG); > + > + regs = PCIE_CLIENT_LINK_TRAIN_ENABLE | PCIE_CLIENT_ARI_ENABLE | > + PCIE_CLIENT_CONF_LANE_NUM(rockchip->lanes); > + > + if (rockchip->is_rc) > + regs |= PCIE_CLIENT_CONF_ENABLE | PCIE_CLIENT_MODE_RC; > + else > + regs |= PCIE_CLIENT_CONF_DISABLE | PCIE_CLIENT_MODE_EP; > + > + rockchip_pcie_write(rockchip, regs, PCIE_CLIENT_CONFIG); > + > + for (i = 0; i < MAX_LANE_NUM; i++) { > + err = phy_power_on(rockchip->phys[i]); > + if (err) { > + dev_err(dev, "power on phy%d err %d\n", i, err); > + goto err_power_off_phy; > + } > + } > + > + /* > + * Please don't reorder the deassert sequence of the following > + * four reset pins. > + */ > + err = reset_control_deassert(rockchip->mgmt_sticky_rst); > + if (err) { > + dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + err = reset_control_deassert(rockchip->core_rst); > + if (err) { > + dev_err(dev, "deassert core_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + err = reset_control_deassert(rockchip->mgmt_rst); > + if (err) { > + dev_err(dev, "deassert mgmt_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + err = reset_control_deassert(rockchip->pipe_rst); > + if (err) { > + dev_err(dev, "deassert pipe_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + return 0; > +err_power_off_phy: > + while (i--) > + phy_power_off(rockchip->phys[i]); > + i = MAX_LANE_NUM; > +err_exit_phy: > + while (i--) > + phy_exit(rockchip->phys[i]); > + return err; > +} > + > int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip) > { > struct device *dev = rockchip->dev; > diff --git a/drivers/pci/rockchip/pcie-rockchip.h b/drivers/pci/rockchip/pcie-rockchip.h > index c0f84d9..af3e74f 100644 > --- a/drivers/pci/rockchip/pcie-rockchip.h > +++ b/drivers/pci/rockchip/pcie-rockchip.h > @@ -27,10 +27,12 @@ > #define PCIE_CLIENT_BASE 0x0 > #define PCIE_CLIENT_CONFIG (PCIE_CLIENT_BASE + 0x00) > #define PCIE_CLIENT_CONF_ENABLE HIWORD_UPDATE_BIT(0x0001) > +#define PCIE_CLIENT_CONF_DISABLE HIWORD_UPDATE(0x0001, 0) > #define PCIE_CLIENT_LINK_TRAIN_ENABLE HIWORD_UPDATE_BIT(0x0002) > #define PCIE_CLIENT_ARI_ENABLE HIWORD_UPDATE_BIT(0x0008) > #define PCIE_CLIENT_CONF_LANE_NUM(x) HIWORD_UPDATE(0x0030, ENCODE_LANES(x)) > #define PCIE_CLIENT_MODE_RC HIWORD_UPDATE_BIT(0x0040) > +#define PCIE_CLIENT_MODE_EP HIWORD_UPDATE(0x0040, 0) > #define PCIE_CLIENT_GEN_SEL_1 HIWORD_UPDATE(0x0080, 0) > #define PCIE_CLIENT_GEN_SEL_2 HIWORD_UPDATE_BIT(0x0080) > #define PCIE_CLIENT_DEBUG_OUT_0 (PCIE_CLIENT_BASE + 0x3c) > @@ -238,6 +240,7 @@ static void rockchip_pcie_write(struct rockchip_pcie *rockchip, u32 val, > } > > int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip); > +int rockchip_pcie_init_port(struct rockchip_pcie *rockchip); > int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip); > void rockchip_pcie_deinit_phys(struct rockchip_pcie *rockchip); > int rockchip_pcie_enable_clocks(struct rockchip_pcie *rockchip); >
On Fri, Feb 23, 2018 at 09:16:46AM +0800, Shawn Lin wrote: > Most of the operations are used for both of host and EP driver, > so this patch spilt them out to a new function, rockchip_pcie_init_port Here and in the $SUBJECT s/spilt/split I will update it myself if there is no v3 required (but I have some minor comments on patch 5 so I suspect it will be required). Lorenzo > in pcie-rockchip.c and rename the original function to > rockchip_pcie_host_init_port to avoid confusion. No functional > changed intended. > > Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> > --- > > Changes in v2: None > > drivers/pci/rockchip/pcie-rockchip-host.c | 131 ++------------------------- > drivers/pci/rockchip/pcie-rockchip.c | 141 ++++++++++++++++++++++++++++++ > drivers/pci/rockchip/pcie-rockchip.h | 3 + > 3 files changed, 151 insertions(+), 124 deletions(-) > > diff --git a/drivers/pci/rockchip/pcie-rockchip-host.c b/drivers/pci/rockchip/pcie-rockchip-host.c > index 079949c..f5b0492 100644 > --- a/drivers/pci/rockchip/pcie-rockchip-host.c > +++ b/drivers/pci/rockchip/pcie-rockchip-host.c > @@ -294,134 +294,17 @@ static void rockchip_pcie_set_power_limit(struct rockchip_pcie *rockchip) > * rockchip_pcie_init_port - Initialize hardware > * @rockchip: PCIe port information > */ > -static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) > +static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) > { > struct device *dev = rockchip->dev; > - int err, i; > + int err, i = MAX_LANE_NUM; > u32 status; > > gpiod_set_value_cansleep(rockchip->ep_gpio, 0); > > - err = reset_control_assert(rockchip->aclk_rst); > - if (err) { > - dev_err(dev, "assert aclk_rst err %d\n", err); > - return err; > - } > - > - err = reset_control_assert(rockchip->pclk_rst); > - if (err) { > - dev_err(dev, "assert pclk_rst err %d\n", err); > - return err; > - } > - > - err = reset_control_assert(rockchip->pm_rst); > - if (err) { > - dev_err(dev, "assert pm_rst err %d\n", err); > + err = rockchip_pcie_init_port(rockchip); > + if (err) > return err; > - } > - > - for (i = 0; i < MAX_LANE_NUM; i++) { > - err = phy_init(rockchip->phys[i]); > - if (err) { > - dev_err(dev, "init phy%d err %d\n", i, err); > - goto err_exit_phy; > - } > - } > - > - err = reset_control_assert(rockchip->core_rst); > - if (err) { > - dev_err(dev, "assert core_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_assert(rockchip->mgmt_rst); > - if (err) { > - dev_err(dev, "assert mgmt_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_assert(rockchip->mgmt_sticky_rst); > - if (err) { > - dev_err(dev, "assert mgmt_sticky_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_assert(rockchip->pipe_rst); > - if (err) { > - dev_err(dev, "assert pipe_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - udelay(10); > - > - err = reset_control_deassert(rockchip->pm_rst); > - if (err) { > - dev_err(dev, "deassert pm_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_deassert(rockchip->aclk_rst); > - if (err) { > - dev_err(dev, "deassert aclk_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - err = reset_control_deassert(rockchip->pclk_rst); > - if (err) { > - dev_err(dev, "deassert pclk_rst err %d\n", err); > - goto err_exit_phy; > - } > - > - if (rockchip->link_gen == 2) > - rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2, > - PCIE_CLIENT_CONFIG); > - else > - rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_1, > - PCIE_CLIENT_CONFIG); > - > - rockchip_pcie_write(rockchip, > - PCIE_CLIENT_CONF_ENABLE | > - PCIE_CLIENT_LINK_TRAIN_ENABLE | > - PCIE_CLIENT_ARI_ENABLE | > - PCIE_CLIENT_CONF_LANE_NUM(rockchip->lanes) | > - PCIE_CLIENT_MODE_RC, > - PCIE_CLIENT_CONFIG); > - > - for (i = 0; i < MAX_LANE_NUM; i++) { > - err = phy_power_on(rockchip->phys[i]); > - if (err) { > - dev_err(dev, "power on phy%d err %d\n", i, err); > - goto err_power_off_phy; > - } > - } > - > - /* > - * Please don't reorder the deassert sequence of the following > - * four reset pins. > - */ > - err = reset_control_deassert(rockchip->mgmt_sticky_rst); > - if (err) { > - dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err); > - goto err_power_off_phy; > - } > - > - err = reset_control_deassert(rockchip->core_rst); > - if (err) { > - dev_err(dev, "deassert core_rst err %d\n", err); > - goto err_power_off_phy; > - } > - > - err = reset_control_deassert(rockchip->mgmt_rst); > - if (err) { > - dev_err(dev, "deassert mgmt_rst err %d\n", err); > - goto err_power_off_phy; > - } > - > - err = reset_control_deassert(rockchip->pipe_rst); > - if (err) { > - dev_err(dev, "deassert pipe_rst err %d\n", err); > - goto err_power_off_phy; > - } > > /* Fix the transmitted FTS count desired to exit from L0s. */ > status = rockchip_pcie_read(rockchip, PCIE_CORE_CTRL_PLC1); > @@ -514,8 +397,8 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) > err_power_off_phy: > while (i--) > phy_power_off(rockchip->phys[i]); > + > i = MAX_LANE_NUM; > -err_exit_phy: > while (i--) > phy_exit(rockchip->phys[i]); > return err; > @@ -1034,7 +917,7 @@ static int __maybe_unused rockchip_pcie_resume_noirq(struct device *dev) > if (err) > goto err_disable_0v9; > > - err = rockchip_pcie_init_port(rockchip); > + err = rockchip_pcie_host_init_port(rockchip); > if (err) > goto err_pcie_resume; > > @@ -1099,7 +982,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev) > goto err_set_vpcie; > } > > - err = rockchip_pcie_init_port(rockchip); > + err = rockchip_pcie_host_init_port(rockchip); > if (err) > goto err_vpcie; > > diff --git a/drivers/pci/rockchip/pcie-rockchip.c b/drivers/pci/rockchip/pcie-rockchip.c > index 6c0063d..d03508c 100644 > --- a/drivers/pci/rockchip/pcie-rockchip.c > +++ b/drivers/pci/rockchip/pcie-rockchip.c > @@ -12,6 +12,7 @@ > */ > > #include <linux/clk.h> > +#include <linux/delay.h> > #include <linux/gpio/consumer.h> > #include <linux/of_pci.h> > #include <linux/phy/phy.h> > @@ -144,6 +145,146 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) > return 0; > } > > +int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) > +{ > + struct device *dev = rockchip->dev; > + int err, i; > + u32 regs; > + > + err = reset_control_assert(rockchip->aclk_rst); > + if (err) { > + dev_err(dev, "assert aclk_rst err %d\n", err); > + return err; > + } > + > + err = reset_control_assert(rockchip->pclk_rst); > + if (err) { > + dev_err(dev, "assert pclk_rst err %d\n", err); > + return err; > + } > + > + err = reset_control_assert(rockchip->pm_rst); > + if (err) { > + dev_err(dev, "assert pm_rst err %d\n", err); > + return err; > + } > + > + for (i = 0; i < MAX_LANE_NUM; i++) { > + err = phy_init(rockchip->phys[i]); > + if (err) { > + dev_err(dev, "init phy%d err %d\n", i, err); > + goto err_exit_phy; > + } > + } > + > + err = reset_control_assert(rockchip->core_rst); > + if (err) { > + dev_err(dev, "assert core_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_assert(rockchip->mgmt_rst); > + if (err) { > + dev_err(dev, "assert mgmt_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_assert(rockchip->mgmt_sticky_rst); > + if (err) { > + dev_err(dev, "assert mgmt_sticky_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_assert(rockchip->pipe_rst); > + if (err) { > + dev_err(dev, "assert pipe_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + udelay(10); > + > + err = reset_control_deassert(rockchip->pm_rst); > + if (err) { > + dev_err(dev, "deassert pm_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_deassert(rockchip->aclk_rst); > + if (err) { > + dev_err(dev, "deassert aclk_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + err = reset_control_deassert(rockchip->pclk_rst); > + if (err) { > + dev_err(dev, "deassert pclk_rst err %d\n", err); > + goto err_exit_phy; > + } > + > + if (rockchip->link_gen == 2) > + rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2, > + PCIE_CLIENT_CONFIG); > + else > + rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_1, > + PCIE_CLIENT_CONFIG); > + > + regs = PCIE_CLIENT_LINK_TRAIN_ENABLE | PCIE_CLIENT_ARI_ENABLE | > + PCIE_CLIENT_CONF_LANE_NUM(rockchip->lanes); > + > + if (rockchip->is_rc) > + regs |= PCIE_CLIENT_CONF_ENABLE | PCIE_CLIENT_MODE_RC; > + else > + regs |= PCIE_CLIENT_CONF_DISABLE | PCIE_CLIENT_MODE_EP; > + > + rockchip_pcie_write(rockchip, regs, PCIE_CLIENT_CONFIG); > + > + for (i = 0; i < MAX_LANE_NUM; i++) { > + err = phy_power_on(rockchip->phys[i]); > + if (err) { > + dev_err(dev, "power on phy%d err %d\n", i, err); > + goto err_power_off_phy; > + } > + } > + > + /* > + * Please don't reorder the deassert sequence of the following > + * four reset pins. > + */ > + err = reset_control_deassert(rockchip->mgmt_sticky_rst); > + if (err) { > + dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + err = reset_control_deassert(rockchip->core_rst); > + if (err) { > + dev_err(dev, "deassert core_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + err = reset_control_deassert(rockchip->mgmt_rst); > + if (err) { > + dev_err(dev, "deassert mgmt_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + err = reset_control_deassert(rockchip->pipe_rst); > + if (err) { > + dev_err(dev, "deassert pipe_rst err %d\n", err); > + goto err_power_off_phy; > + } > + > + return 0; > +err_power_off_phy: > + while (i--) > + phy_power_off(rockchip->phys[i]); > + i = MAX_LANE_NUM; > +err_exit_phy: > + while (i--) > + phy_exit(rockchip->phys[i]); > + return err; > +} > + > int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip) > { > struct device *dev = rockchip->dev; > diff --git a/drivers/pci/rockchip/pcie-rockchip.h b/drivers/pci/rockchip/pcie-rockchip.h > index c0f84d9..af3e74f 100644 > --- a/drivers/pci/rockchip/pcie-rockchip.h > +++ b/drivers/pci/rockchip/pcie-rockchip.h > @@ -27,10 +27,12 @@ > #define PCIE_CLIENT_BASE 0x0 > #define PCIE_CLIENT_CONFIG (PCIE_CLIENT_BASE + 0x00) > #define PCIE_CLIENT_CONF_ENABLE HIWORD_UPDATE_BIT(0x0001) > +#define PCIE_CLIENT_CONF_DISABLE HIWORD_UPDATE(0x0001, 0) > #define PCIE_CLIENT_LINK_TRAIN_ENABLE HIWORD_UPDATE_BIT(0x0002) > #define PCIE_CLIENT_ARI_ENABLE HIWORD_UPDATE_BIT(0x0008) > #define PCIE_CLIENT_CONF_LANE_NUM(x) HIWORD_UPDATE(0x0030, ENCODE_LANES(x)) > #define PCIE_CLIENT_MODE_RC HIWORD_UPDATE_BIT(0x0040) > +#define PCIE_CLIENT_MODE_EP HIWORD_UPDATE(0x0040, 0) > #define PCIE_CLIENT_GEN_SEL_1 HIWORD_UPDATE(0x0080, 0) > #define PCIE_CLIENT_GEN_SEL_2 HIWORD_UPDATE_BIT(0x0080) > #define PCIE_CLIENT_DEBUG_OUT_0 (PCIE_CLIENT_BASE + 0x3c) > @@ -238,6 +240,7 @@ static void rockchip_pcie_write(struct rockchip_pcie *rockchip, u32 val, > } > > int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip); > +int rockchip_pcie_init_port(struct rockchip_pcie *rockchip); > int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip); > void rockchip_pcie_deinit_phys(struct rockchip_pcie *rockchip); > int rockchip_pcie_enable_clocks(struct rockchip_pcie *rockchip); > -- > 1.9.1 > >
diff --git a/drivers/pci/rockchip/pcie-rockchip-host.c b/drivers/pci/rockchip/pcie-rockchip-host.c index 079949c..f5b0492 100644 --- a/drivers/pci/rockchip/pcie-rockchip-host.c +++ b/drivers/pci/rockchip/pcie-rockchip-host.c @@ -294,134 +294,17 @@ static void rockchip_pcie_set_power_limit(struct rockchip_pcie *rockchip) * rockchip_pcie_init_port - Initialize hardware * @rockchip: PCIe port information */ -static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) +static int rockchip_pcie_host_init_port(struct rockchip_pcie *rockchip) { struct device *dev = rockchip->dev; - int err, i; + int err, i = MAX_LANE_NUM; u32 status; gpiod_set_value_cansleep(rockchip->ep_gpio, 0); - err = reset_control_assert(rockchip->aclk_rst); - if (err) { - dev_err(dev, "assert aclk_rst err %d\n", err); - return err; - } - - err = reset_control_assert(rockchip->pclk_rst); - if (err) { - dev_err(dev, "assert pclk_rst err %d\n", err); - return err; - } - - err = reset_control_assert(rockchip->pm_rst); - if (err) { - dev_err(dev, "assert pm_rst err %d\n", err); + err = rockchip_pcie_init_port(rockchip); + if (err) return err; - } - - for (i = 0; i < MAX_LANE_NUM; i++) { - err = phy_init(rockchip->phys[i]); - if (err) { - dev_err(dev, "init phy%d err %d\n", i, err); - goto err_exit_phy; - } - } - - err = reset_control_assert(rockchip->core_rst); - if (err) { - dev_err(dev, "assert core_rst err %d\n", err); - goto err_exit_phy; - } - - err = reset_control_assert(rockchip->mgmt_rst); - if (err) { - dev_err(dev, "assert mgmt_rst err %d\n", err); - goto err_exit_phy; - } - - err = reset_control_assert(rockchip->mgmt_sticky_rst); - if (err) { - dev_err(dev, "assert mgmt_sticky_rst err %d\n", err); - goto err_exit_phy; - } - - err = reset_control_assert(rockchip->pipe_rst); - if (err) { - dev_err(dev, "assert pipe_rst err %d\n", err); - goto err_exit_phy; - } - - udelay(10); - - err = reset_control_deassert(rockchip->pm_rst); - if (err) { - dev_err(dev, "deassert pm_rst err %d\n", err); - goto err_exit_phy; - } - - err = reset_control_deassert(rockchip->aclk_rst); - if (err) { - dev_err(dev, "deassert aclk_rst err %d\n", err); - goto err_exit_phy; - } - - err = reset_control_deassert(rockchip->pclk_rst); - if (err) { - dev_err(dev, "deassert pclk_rst err %d\n", err); - goto err_exit_phy; - } - - if (rockchip->link_gen == 2) - rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2, - PCIE_CLIENT_CONFIG); - else - rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_1, - PCIE_CLIENT_CONFIG); - - rockchip_pcie_write(rockchip, - PCIE_CLIENT_CONF_ENABLE | - PCIE_CLIENT_LINK_TRAIN_ENABLE | - PCIE_CLIENT_ARI_ENABLE | - PCIE_CLIENT_CONF_LANE_NUM(rockchip->lanes) | - PCIE_CLIENT_MODE_RC, - PCIE_CLIENT_CONFIG); - - for (i = 0; i < MAX_LANE_NUM; i++) { - err = phy_power_on(rockchip->phys[i]); - if (err) { - dev_err(dev, "power on phy%d err %d\n", i, err); - goto err_power_off_phy; - } - } - - /* - * Please don't reorder the deassert sequence of the following - * four reset pins. - */ - err = reset_control_deassert(rockchip->mgmt_sticky_rst); - if (err) { - dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err); - goto err_power_off_phy; - } - - err = reset_control_deassert(rockchip->core_rst); - if (err) { - dev_err(dev, "deassert core_rst err %d\n", err); - goto err_power_off_phy; - } - - err = reset_control_deassert(rockchip->mgmt_rst); - if (err) { - dev_err(dev, "deassert mgmt_rst err %d\n", err); - goto err_power_off_phy; - } - - err = reset_control_deassert(rockchip->pipe_rst); - if (err) { - dev_err(dev, "deassert pipe_rst err %d\n", err); - goto err_power_off_phy; - } /* Fix the transmitted FTS count desired to exit from L0s. */ status = rockchip_pcie_read(rockchip, PCIE_CORE_CTRL_PLC1); @@ -514,8 +397,8 @@ static int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) err_power_off_phy: while (i--) phy_power_off(rockchip->phys[i]); + i = MAX_LANE_NUM; -err_exit_phy: while (i--) phy_exit(rockchip->phys[i]); return err; @@ -1034,7 +917,7 @@ static int __maybe_unused rockchip_pcie_resume_noirq(struct device *dev) if (err) goto err_disable_0v9; - err = rockchip_pcie_init_port(rockchip); + err = rockchip_pcie_host_init_port(rockchip); if (err) goto err_pcie_resume; @@ -1099,7 +982,7 @@ static int rockchip_pcie_probe(struct platform_device *pdev) goto err_set_vpcie; } - err = rockchip_pcie_init_port(rockchip); + err = rockchip_pcie_host_init_port(rockchip); if (err) goto err_vpcie; diff --git a/drivers/pci/rockchip/pcie-rockchip.c b/drivers/pci/rockchip/pcie-rockchip.c index 6c0063d..d03508c 100644 --- a/drivers/pci/rockchip/pcie-rockchip.c +++ b/drivers/pci/rockchip/pcie-rockchip.c @@ -12,6 +12,7 @@ */ #include <linux/clk.h> +#include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/of_pci.h> #include <linux/phy/phy.h> @@ -144,6 +145,146 @@ int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) return 0; } +int rockchip_pcie_init_port(struct rockchip_pcie *rockchip) +{ + struct device *dev = rockchip->dev; + int err, i; + u32 regs; + + err = reset_control_assert(rockchip->aclk_rst); + if (err) { + dev_err(dev, "assert aclk_rst err %d\n", err); + return err; + } + + err = reset_control_assert(rockchip->pclk_rst); + if (err) { + dev_err(dev, "assert pclk_rst err %d\n", err); + return err; + } + + err = reset_control_assert(rockchip->pm_rst); + if (err) { + dev_err(dev, "assert pm_rst err %d\n", err); + return err; + } + + for (i = 0; i < MAX_LANE_NUM; i++) { + err = phy_init(rockchip->phys[i]); + if (err) { + dev_err(dev, "init phy%d err %d\n", i, err); + goto err_exit_phy; + } + } + + err = reset_control_assert(rockchip->core_rst); + if (err) { + dev_err(dev, "assert core_rst err %d\n", err); + goto err_exit_phy; + } + + err = reset_control_assert(rockchip->mgmt_rst); + if (err) { + dev_err(dev, "assert mgmt_rst err %d\n", err); + goto err_exit_phy; + } + + err = reset_control_assert(rockchip->mgmt_sticky_rst); + if (err) { + dev_err(dev, "assert mgmt_sticky_rst err %d\n", err); + goto err_exit_phy; + } + + err = reset_control_assert(rockchip->pipe_rst); + if (err) { + dev_err(dev, "assert pipe_rst err %d\n", err); + goto err_exit_phy; + } + + udelay(10); + + err = reset_control_deassert(rockchip->pm_rst); + if (err) { + dev_err(dev, "deassert pm_rst err %d\n", err); + goto err_exit_phy; + } + + err = reset_control_deassert(rockchip->aclk_rst); + if (err) { + dev_err(dev, "deassert aclk_rst err %d\n", err); + goto err_exit_phy; + } + + err = reset_control_deassert(rockchip->pclk_rst); + if (err) { + dev_err(dev, "deassert pclk_rst err %d\n", err); + goto err_exit_phy; + } + + if (rockchip->link_gen == 2) + rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_2, + PCIE_CLIENT_CONFIG); + else + rockchip_pcie_write(rockchip, PCIE_CLIENT_GEN_SEL_1, + PCIE_CLIENT_CONFIG); + + regs = PCIE_CLIENT_LINK_TRAIN_ENABLE | PCIE_CLIENT_ARI_ENABLE | + PCIE_CLIENT_CONF_LANE_NUM(rockchip->lanes); + + if (rockchip->is_rc) + regs |= PCIE_CLIENT_CONF_ENABLE | PCIE_CLIENT_MODE_RC; + else + regs |= PCIE_CLIENT_CONF_DISABLE | PCIE_CLIENT_MODE_EP; + + rockchip_pcie_write(rockchip, regs, PCIE_CLIENT_CONFIG); + + for (i = 0; i < MAX_LANE_NUM; i++) { + err = phy_power_on(rockchip->phys[i]); + if (err) { + dev_err(dev, "power on phy%d err %d\n", i, err); + goto err_power_off_phy; + } + } + + /* + * Please don't reorder the deassert sequence of the following + * four reset pins. + */ + err = reset_control_deassert(rockchip->mgmt_sticky_rst); + if (err) { + dev_err(dev, "deassert mgmt_sticky_rst err %d\n", err); + goto err_power_off_phy; + } + + err = reset_control_deassert(rockchip->core_rst); + if (err) { + dev_err(dev, "deassert core_rst err %d\n", err); + goto err_power_off_phy; + } + + err = reset_control_deassert(rockchip->mgmt_rst); + if (err) { + dev_err(dev, "deassert mgmt_rst err %d\n", err); + goto err_power_off_phy; + } + + err = reset_control_deassert(rockchip->pipe_rst); + if (err) { + dev_err(dev, "deassert pipe_rst err %d\n", err); + goto err_power_off_phy; + } + + return 0; +err_power_off_phy: + while (i--) + phy_power_off(rockchip->phys[i]); + i = MAX_LANE_NUM; +err_exit_phy: + while (i--) + phy_exit(rockchip->phys[i]); + return err; +} + int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip) { struct device *dev = rockchip->dev; diff --git a/drivers/pci/rockchip/pcie-rockchip.h b/drivers/pci/rockchip/pcie-rockchip.h index c0f84d9..af3e74f 100644 --- a/drivers/pci/rockchip/pcie-rockchip.h +++ b/drivers/pci/rockchip/pcie-rockchip.h @@ -27,10 +27,12 @@ #define PCIE_CLIENT_BASE 0x0 #define PCIE_CLIENT_CONFIG (PCIE_CLIENT_BASE + 0x00) #define PCIE_CLIENT_CONF_ENABLE HIWORD_UPDATE_BIT(0x0001) +#define PCIE_CLIENT_CONF_DISABLE HIWORD_UPDATE(0x0001, 0) #define PCIE_CLIENT_LINK_TRAIN_ENABLE HIWORD_UPDATE_BIT(0x0002) #define PCIE_CLIENT_ARI_ENABLE HIWORD_UPDATE_BIT(0x0008) #define PCIE_CLIENT_CONF_LANE_NUM(x) HIWORD_UPDATE(0x0030, ENCODE_LANES(x)) #define PCIE_CLIENT_MODE_RC HIWORD_UPDATE_BIT(0x0040) +#define PCIE_CLIENT_MODE_EP HIWORD_UPDATE(0x0040, 0) #define PCIE_CLIENT_GEN_SEL_1 HIWORD_UPDATE(0x0080, 0) #define PCIE_CLIENT_GEN_SEL_2 HIWORD_UPDATE_BIT(0x0080) #define PCIE_CLIENT_DEBUG_OUT_0 (PCIE_CLIENT_BASE + 0x3c) @@ -238,6 +240,7 @@ static void rockchip_pcie_write(struct rockchip_pcie *rockchip, u32 val, } int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip); +int rockchip_pcie_init_port(struct rockchip_pcie *rockchip); int rockchip_pcie_get_phys(struct rockchip_pcie *rockchip); void rockchip_pcie_deinit_phys(struct rockchip_pcie *rockchip); int rockchip_pcie_enable_clocks(struct rockchip_pcie *rockchip);
Most of the operations are used for both of host and EP driver, so this patch spilt them out to a new function, rockchip_pcie_init_port in pcie-rockchip.c and rename the original function to rockchip_pcie_host_init_port to avoid confusion. No functional changed intended. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> --- Changes in v2: None drivers/pci/rockchip/pcie-rockchip-host.c | 131 ++------------------------- drivers/pci/rockchip/pcie-rockchip.c | 141 ++++++++++++++++++++++++++++++ drivers/pci/rockchip/pcie-rockchip.h | 3 + 3 files changed, 151 insertions(+), 124 deletions(-)